Steel back and lug for brake-shoes.



W. H. HARING.

STEEL BACK AND LUG FOR BRAKE SHOES.

APPLIOATION FILED JUNE 11, 191

a" Llflg fifi 3. RENEWED MAY 14, 1914.

1 3136111363 July 7, 191%.

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STEEL BACK AND'LUG P AKE SHOES.

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1,102,582 Patented July 7, 1914.

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WITNESSES I/l/l/EIV time STATES FFIC.

WILLIAM H. HARING, OF SUFFERN, NEW YORK, ASSIGNOB TO AMERICAN BRAKE SHOE8a FOUNDRY COMPANY, OF MAHWAH, NEW JERSEY, A CORIORATION OF NEW JERSEY.

Specification of Letters Patent.

STEEL BACK AND LUG non BRAKE-SHOES.

. Patented July '7, 1914.

Application filed June 11, 1913, Serial No. 772,964. Renewed May 14,1914. Serial No. 838,621.

To all whom it may concern Be it known that I, WILLIAM H. HARING, acitizen of the United States, and a resident of Sufi'ern, in the countyof Rockland and State of New York, have invented a new and j ImprovedSteel Back and Lug for Brake- Shoes, of which the following is a full,clear, and exact description.

This invention relates to brake shoes, and i particularly to that partcommonly known I as steel backs and lugs, and has for an. object toprovide an improved steel back and lug of simple, strong structure, andone that will not crack,

Another object of the invention is to provide a steel back structure andlug, with a I body portion acting as the back and a winding of'pliablemetal designed to act as the lug, or the reinforcement for the lug.

A still further object of the invention is to provide a steel backwith awrapping .of I steel at substantially the central part,

whereby when a shoe is cast on a steel back some of the metal may becaused to surround entirely, or partially surround the wrapping, wherebythe shoe is backed up wit-ha plate of steel and the lug is reinforcedwith a strip or plurality of strips of steel.

In carrying out the objects of the invention, a steel back is providedformed either with a straight central portion or with a reduced centralportion, designed to receive a winding of pliable metal, as for instancea strap steel, or other suitable metal. In place of the strap steel,steel wire, or other pliable wire may be used. Also in the formation ofthe steel back, the reduced central portion may be bent outwardly forpresenting a recess for receiving the coil of metal forming the lug orthe reinforcement of the lug when the lug is formed of cast mater al. Apractical embodiment of the invent1on isrepresented in the accompanyingdrawings forming a part of this specificatlon 1 n which similarcharacters of reference indicate corresponding parts in all the views.

Figure 1 is a perspective vlew of a, steel lug embodying the invention;Fig. 2 is a longitudinal vertical section through a shoe, a and lugembodying the nvention arranged therein; Fig. 3 is a section throughFlg, 2 on the line 3-3; Fig. 4 is a perspect ve view of a slightlymodified form of the inwith the steel'back vention to that shown in Fig.1; Fig. 5 is 1 a longitudinal vertical section through the 1 brake shoewith the steel back and lug disclosed in Fig. l arranged in place; Fig.6 is a section through -Fig. 5 on. the line 6-6; j and Fig. 7 is a Viewsimilar to Fig. 5 ex- 1 cept that the same shows a slightly modifiedform of steel back.

Referring to the accompanying drawings by numerals, 1 indicates a steelback provided with apertures 2 and 3 at each end. If desired, a singleaperture could'be used, though a plurality is preferred. Midway betweenthe ends of the steel back 1 is a reducing portion 4; which is providedwith a pressed out, or pressed up portion 5, whereby the winding 6 ofstrap steel or other flexible metal, may be placed in position, as shownin Fig. 1, without an appreciable amount thereof projecting below theface .of the steel back 1. The winding 6 may be formed With a singlewinding or with any desired number, without departing from the spirit ofthe invention, the end 7 of the winding being preferably clamped overthe pressed up portion 5 so as to better hold the winding 6 in positionprevious to casting. After the steel back and winding 6 whichforms thelug or the reinforcement, has been properly constructed and assembled,as shown in Fig. 1, the same is in condition to have the cast metalapplied. After the cast iron, cast steel, or other metal has been castin place, as shown in Fig. 2, ,the brake shoe is in condition for use.In Fig. 2 the steel back 1 is shown as being entirely rear face of thesteel back licould be flush with the back of the shoe 8 if desired,without departing from the spirit of the invention. It will also beobserved that the lug 9 of shoe 8 surrounds or has embedded therein thewinding 6, whereby the lug is reinforced and even though the same cracksit cannot fall off. i

In Figs. 4, 5, and 6 a slightly modified form of the invention isdisclosed. Referring to these figures, thesteel back 1 has arrangedcentrally thereof windings 10, formed, of steel wire, or other flexiblewire,

' 11 of shoe 12. Aside from the windings 10 being of wire, the structureis the same] as the preferred form of the invention so that embedded orsubmerged in the rear part of the shoe 8, but it will be evident thatthe for providing a reinforcement for the lug I the same referencenumerals will be used for the same parts.

In Fig. 7 is disclosed a further slightly modified form of theinvention, in which the center 13 is perfectly straight so that thesteel back 1 is formed in the arc of a circle from one end to the otherwithout a break. In forming the steel back, the same is preferablyformed on the arc of a circle in all forms of the invention, buttransversely it is preferably formed flat or straight. In the form ofthe invention shown in Fig. 7, a shoe 14 is provided with alug 15, whichmay have as its reinforcement windings 10, as shown, or windings similarto windings 6.

It will be ur'fd'erstdod that the center of the steel back in any of theforms of the invention could be made of the same width as the remainingpart of the steel back,

' without departing from the spirit of the invention.

f Having thus described my invention I claim as new and desire to secureby Letters Patent r v I 1. A steel back comprising a single strip ofmetal for forming the body of the steel back, and a winding of metal forforming a lug reinforcement.

2. A' back for a brake shoe formed from a strip of metal providedsubstantially centrally with a transverse winding of metal.

3. A back for brake shoes formed from a ductile plate having a raisedcentral portion, and a winding of ductile metal encircling said raisedportion and with ortions thereof spaced therefrom for provitfiforcement.

- 4. A back for brake shoes formed from a ng a lug reinsingle plate ofductile metal, and a transverse winding of ductile strips of metal, saidtransverse winding presenting a lug reinforcement.

5. A back for brake shoes formed from a strip of ductile metal having areduced pressed out portion and a substantially ring member encirclingsaid pressed out portion said ring member comprising a plurality ofwindings of a strip of metal.

6. A back for brake shoes formed from a strip of ductile metal, saidstrip being reduced centrally, and said central portion being offset,and a winding of ductile metal a strip of metal, and a ring structurear-' ranged centrally of the strip of metal, said ring structurecomprising a plurality of superimposed strips of ductile metal.

9. A cast brake shoe having a steel back, and a coiled ductilereinforcement arranged in the lug of the brake shoe.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

WILLIAM H. HARING.

Witnesses:

A. L. Krrcrnn, PHILIP D. RoLLHAUs.

